Machine for making the stud members of snap-buttons



W. NELSON. MACHINE FOR MAKING THE STUD MEMBERS or SNAP BUTTONS.

APPLICATION FILED OCT. 6, 1916. A

Patented Nov. 16, 1920.

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APPLICATION FILED OCT- 6. H6.

Patented Nov. 16, 1920.

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MACHINE FOR MAKING THE STUD MEMBERS OF SNAP BUTTONS.

APPLICATION FILED OCT. e, 1916.

1,358,773. Patented Nov. 16, 1920.

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w. NELSON MACHINE FOR MAKING THE STUD MEMBERS OF SNAP BUTTONS.

APPLICATION FILED OCT. 6. I9I6. I

Patented Nov. 16, 1920-.

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MACHINE FOR MAKING THE STUD MEMBERS OF SNAP BUTTONS.

APPLICATION FILED OCT. 6. 1916- Patented Nov. 16, 1920.

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* omrso STATES PATENT OFFICE.

WILLIAM.NELSON,. or NEW YORK, N. in, nssieivon, BYIMESNE .ASSIGNMENTS,5TO CONSOLIDATED AMERICAN rea ranges ooMraNIEs, ind, ornnw Yo tiguN. Y,,

A CORPORATION OF NEW YORK.

MACHINE FOR MAKlING THE STUD.MEMBERS QFSNAP-IBU'ITONS.

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Specification of Letters Patent. Pat31113ed N 16, 1920,

Application filed October 6, 1916. Serial No. 124,1.19.

To all whom it may concern:

Be it known that l, WILLIAM NELSON, a citizen of the United States, residing in New York, county and State of New York, have invented certain new and useful improvements in Machines torMaking the Stud Members of Snap-Buttons, of which the fol lowing is a specification."

This invention relates to the manufacture of one of the parts of the well known snap fastener 01' press button which comprises two members, a stud and a socket.

111 a co-pending application for patent filed by me September 22, 1916, Serial No. 121,622 a machine is shown, described and claimedv for making the stud member in which the stock, in the form of a metal strip or ribbon, is fed step by step between a series of sets of upper and lower dies which draw metal from the stock, gradually reduce the metal thus drawn to proper size for the stud post, then form a head on the post, then blankout the stud from the stock and turn down its peripheral edge, and then transfer the flanged stud to another set of dies which curl under ordoubie the edge of the base portion of the stock. p r

My improved machine is similar in many respects to that above referredtobutdiffers therefrom in that whereas'in the before mentioned machine the stud was separated from the stock before the operation which curls or doubles the edge of the base and finishes the stud, according to my present invention the stud has the edge of its base portion flanged for the curling operation before it is separated from the stock.

Experience has demonstrated that the step of transferring the studs from the blankingout to the curling dies is a delicate operation and required great care but this difficulty improvements.

in the accompanying drawings:

Figure 1 is a sideelevation of a stud forming machine. embodying my improvements.

Fig. 2 is a plan vie-wot the stock showing the mannerin which thedies operate thereon to produce the stud. i

Fig. 3 shows a vertical.longitudinalseotion through the stock illustrated in Fig. 2.

The remaining figures of the drawings are on enlarged scale.

Fig. 4 is a bottom plan view of the upper has beenentirely overcome by my present dies for blanking out the studs and for curlmg the edges of the stud bases. big. 5 1s atop planviewot the lower dies for blanking out the studs and for curling the edges of their bases.

Thisdrawing also shows the'devices employed for separating the completedstuds from the stock and also a stock feed mechanism. a

Fig. 6 illustrates in vertical section "the dies and feed mechanism shown in Figs. 4 and 5.

' Fig. 7 isa detail view in vertical section portion of the of the curling'dies and the; slide for ejecting the completed studs from thecurlingdies.

In Fig. 7 the upper die is in its elevated position and the ejecting slide is in the position it assumes after the stud has been ejected.

Fig. 8 is a view similar to Fig. 7 butshows the upper die lowered andthe ejecting-slide in its withdrawn position. i

The dies and y the mechanism associated therewith maybe supported in any suitable way and operated'by mechanism ofthe kind shown in my beforc mentionedapplication for patent. 9

The'stock, in the form of a metal strip or ribbon K, is passe'dthrough a guide A and between the upper and; lower dies and then to a ieederB'which isoperated to pullthe stock through the machine step by stepjbiatween the dies- The upper dies and punches for forming the studs are carried by an upper die carrier D and the corresponding lower dies and punches are carried by the bed plate The upper die carrier is raised and lowered by any suitable mechanism and is guided by posts F rising fromthe bed plate and entering sockets? in the upper die carrier.

Thestock is first operated upon by upper and lower dies-G, G to draw themetal in such manner as to gradually form a projection on the stock which is subsequently shaped toform the headed post of the stud in the manner described 'in my application for patent before mentioned and as thedevices for forming the headson the stud posts form no part of the invention herein'claimed they are not illustrated in the drawingsn After a projectionof the proper-sizeis formed the stock is advanced until the projection arrives between the upper and lower l The dies for punches H, H which pierce that part of the stock whichis to form the base of the stud and'thusform holes for the thread by means of which the stud is secured to a garment or to a fabric.

By re'ferenceto Figs. 2 and 3 the manner in which thesto'ck is treated by'the dies will be better understood. The parts 1,72, 3, 4,5 and 6 are formed successively by the dies G, G. 7 indicates where the thread holes areformed. 8 and 10 indicate parts not operated upon by the dies,'while 9 indicates where the initials of: the manufacturer are applied. At the point 11 the metal is drawn orbent upward toiforni a downwardly extending fiangeY on the stud. blank, without separating-the blank irom the stock;

embossing the initials of the manufacturer'on the cated at J,J. e V r I The dies; for forming the. flanges on the stud blanks are indicated at K, K. These dies are more "clearly shown inFig. 6; The

upper die K comprises a bar is having acentral bore ic and-fa recessedend 75 The bar Jr: is attached to a block k secured 'to the upper-die carrier D. K ind cates @SPIlIlg- The pressed stripper for r the upper die. lower die K comprises a bar 70 mounted in a block 70 sup'portedon the bed plate E.

K indicates a springpressed stripper for the lower die. As the stock lsffed between thediesattheproper time the} metal is pressed by the dies K, K in such manner as to form aflange y on the studblank.

'- This isyindicated in Fig. 3 at 11;

Ailter the stud blank has been flanged the stoclris ,inoved forward two steps and the blank comes between the dies'L, LT which ,cut it from the stock. Theupper die L comprises a cylindrical hollow bar l at tached to the die carrier D and this block incloses a plunger die Z having a central bofre' Z and a recessed end Z The walls'of the rec'essjare .so formed as 'to provide a thin edge Z. A strong spring Z pushes the plunger downward.

' The lower die L comprises a bar Z conn'ectedwith; a block Z? resting on the bed "plate, E and extending through; a springpressed; stripper-block Z L The bar Z 1s aformed withla projection Z adapted to enterthe recess 2. When the blank arrives at the dies L, L the upper die descends and the stock'is cut asindicated at 13in Figs. 2

and 3.- The blanking dies are not positive .in their action as they are spring-pressed.

The cutting vis actually performed by the edge '2 of block Z. As soon asthe die carrier Dmoves upward the strong spring Z above thed1eilf, moves the latterback to its norzinalposition and the blanked out stud is separated from the upper dies; the stud being still heldin position inthe 'stock.j

stud blanks are -indiin the bed plate, from suitable receptacle. I r

v After the stud has been thus blanked out 111 the stock the latter moves forward two steps to the curling dies M, MC The upper die ii l comprises a hollow/bar "wlthln which is adapted to slide a rod rm against theupper end of which bears a spring m housed in a recess inthe die carrier D. The bar we is held by a block m3 attached to the die carrier and the lower end of this'bar extends through aspring pressed stripper BR The lower end of the bar m is recessed as indicated at m? and itis alsorecessedon its side at in such manner "as t0 Icooperatewith the lower die M to curl or double the flange y on the blanli. Thelower die M is set in a block m9 resting on another blcclrnf supported by the bed plate llfithin the blocker/i7 an anvil m which is. recessed at m in such manner as. to codperate with the recessed end of the bar recesses indicated at w in Fig. o accommodate the studs as they are moved from one the vstuds whenthey arerin positions heset of dies to another, to prevent crushing or tween dies upon lowering of thecarrier D;

Then thediecarrierl) descend. the top of the postof the stud isengaged by'the rod m and the stud is forced into th e lower curling die" l-. Gentinuec downward enter the lower end of the bore of berm,

the edges of the, base of the stud resting upon the inclined walls of. the lower curb ing d e l It will be understood that the '1110V6Il161'll3 causesfthe head ofthe post to of the spring m 'during this operation.

W hen the die carrier moves farther down d, the lOYZerend. of the hollow bar m engages the upper face of the stud base and forces the latter downward. By reason or base. The recessescmt andm in the curling dies prevent mashing or distort ng the base or its curled flange. I i h It will be observed-that the stud blank remains inthe stockwhile-passing from the blanking out dies to, the curling dies butduringv the curling operationv the. stud is separated from the stock and is transferred to a lowerllevel in front ofan ejector slide 'The'slide N transfersthe completed stud'to. e

N which operates just above the anvil m a position over a hole 0 in the bloclrm through which the stud falls-into a hole 0" which it passes to a s s5 m to curl the flange on the stud blank; '"llhe in V 100 rod m? moves 1nwardly aga1nst the pressure r 1,358,773 I a p 3 The slide N is bifurcated at its front. end and is reciprocated in a guide formed be tween the blocks m and m At its end the slide carries a roller n operating in a slot 19 in a cam plate P attached to the upper die carrier D. When the upper die carrier a bifurcated laterally projecting arm 6 hav-\ ing a jaw b which cooperates with a jaw b on the upper lever B, which is pivoted at b to the lever b. The lever B carries a roller 7) operating in a slot 8 in a cam plate S attached to the upper die carrier. A set screw T carried by a bar t is employed for adjusting and regulating the feed. U indicates spring brakes for restraining the movement of the lever 5 thus insuring the proper movement of the lever B. W inclicates guide pins for the dies.

It will thus be seen that much of the mechanism herein shown and described is similar to the mechanism shown in my application for patent before mentioned, but it will also-be observed that according to my present invention the stud blank is retained in the stock until after the curling operation is accomplished on the flanged blank and that the stud is not separated entirely from the stock until all the operations have been performed thereon.

I claim as my invention:

1. A stud making machine comprising means for feeding the stock and a series of sets of upper and lower dies, the first set being provided with means for forming a stud post in the stock, the second set having devices for forming a flange therein surrounding the post and thus defining the base of the stud without separating the flange from the stock, a third set of dies having means for cutting the stock surrounding the flange without removing the stud blank from the stock, and a fourth set of dies having devices for doubling the peripheral edge of the base portion of the stud.

2. stud making machine comprising means for feeding the stock intermittently and a series of sets of upper and lower dies, the first set being provided with means for forming a stud post in the stock, the

second set having devices for forming a. flange therein surrounding the post and thus defining the base of the stud, another set of dies being provided with means for cutting the stock surrounding the flange without removing the blank from its position in the stock, and another set of dies being provided with devices for curling or doubling the peripheral edge of the stud base and for separating the stud thus formed from the stock.

3. In a stud making machine, means for operating upon the stock'to provide a post thereon, means for forming a flange on the stock surrounding the post and disposed at an angle to the stock, means for cutting the lower end of the flange from the stock, and means for curling the said flange.

4:. In a stud making machine, means for operating upon the stock to provide a post thereon, means for successively forming a flange upon the stock surrounding the post and for cutting the flange from the stock, and means for curling the said flange.

5. In a stud making machine, means for operating upon the stock to provide a post thereon means for forming an angular flange upon the stock surrounding the post and thus defining the base of the stud, means for cutting the flange from the stock, means for ehangm the inclination of the flange, and means or curling the said flange upon the stud base.

6. In combination with the subject matter of claim 5, and means for removing the stud from the curling means.

7. In a stud making machine, means for operating upon the stock to provide a post thereon, means for forming an angularly dis" posed flange upon the stock surrounding the post and thus defining the base of the stud, means for cutting the flange from the stock, means for changing the inclination of the flange, means for curling the flange upon the stud base, and an ejector for moving the stud after the flange curling operation.

8. In a stud making machine, means for operating upon the stock to'provide an upstanding post thereon, means for forming an angularly disposed flange upon the stock surrounding the post, means for cutting the flange from the stock, and means for curling the flange upon the under side of the stud base.

In testimony whereof,. I have hereunto I subscribed my name.

WILLIAM NELSON. 

